33 static inline void __buffer_unlink_first(struct journal_head *jh)  in __buffer_unlink_first()  argument
35 	transaction_t *transaction = jh->b_cp_transaction;  in __buffer_unlink_first()
37 	jh->b_cpnext->b_cpprev = jh->b_cpprev;  in __buffer_unlink_first()
38 	jh->b_cpprev->b_cpnext = jh->b_cpnext;  in __buffer_unlink_first()
39 	if (transaction->t_checkpoint_list == jh) {  in __buffer_unlink_first()
40 		transaction->t_checkpoint_list = jh->b_cpnext;  in __buffer_unlink_first()
41 		if (transaction->t_checkpoint_list == jh)  in __buffer_unlink_first()
51 static inline void __buffer_unlink(struct journal_head *jh)  in __buffer_unlink()  argument
53 	transaction_t *transaction = jh->b_cp_transaction;  in __buffer_unlink()
55 	__buffer_unlink_first(jh);  in __buffer_unlink()
56 	if (transaction->t_checkpoint_io_list == jh) {  in __buffer_unlink()
57 		transaction->t_checkpoint_io_list = jh->b_cpnext;  in __buffer_unlink()
58 		if (transaction->t_checkpoint_io_list == jh)  in __buffer_unlink()
68 static inline void __buffer_relink_io(struct journal_head *jh)  in __buffer_relink_io()  argument
70 	transaction_t *transaction = jh->b_cp_transaction;  in __buffer_relink_io()
72 	__buffer_unlink_first(jh);  in __buffer_relink_io()
75 		jh->b_cpnext = jh->b_cpprev = jh;  in __buffer_relink_io()
77 		jh->b_cpnext = transaction->t_checkpoint_io_list;  in __buffer_relink_io()
78 		jh->b_cpprev = transaction->t_checkpoint_io_list->b_cpprev;  in __buffer_relink_io()
79 		jh->b_cpprev->b_cpnext = jh;  in __buffer_relink_io()
80 		jh->b_cpnext->b_cpprev = jh;  in __buffer_relink_io()
82 	transaction->t_checkpoint_io_list = jh;  in __buffer_relink_io()
92 static int __try_to_free_cp_buf(struct journal_head *jh)  in __try_to_free_cp_buf()  argument
95 	struct buffer_head *bh = jh2bh(jh);  in __try_to_free_cp_buf()
97 	if (jh->b_transaction == NULL && !buffer_locked(bh) &&  in __try_to_free_cp_buf()
99 		JBUFFER_TRACE(jh, "remove from checkpoint list");  in __try_to_free_cp_buf()
100 		ret = __jbd2_journal_remove_checkpoint(jh) + 1;  in __try_to_free_cp_buf()
210 	struct journal_head	*jh;  in jbd2_log_do_checkpoint()  local
253 		jh = transaction->t_checkpoint_list;  in jbd2_log_do_checkpoint()
254 		bh = jh2bh(jh);  in jbd2_log_do_checkpoint()
265 		if (jh->b_transaction != NULL) {  in jbd2_log_do_checkpoint()
266 			transaction_t *t = jh->b_transaction;  in jbd2_log_do_checkpoint()
290 			if (__jbd2_journal_remove_checkpoint(jh))  in jbd2_log_do_checkpoint()
307 		__buffer_relink_io(jh);  in jbd2_log_do_checkpoint()
336 		jh = transaction->t_checkpoint_io_list;  in jbd2_log_do_checkpoint()
337 		bh = jh2bh(jh);  in jbd2_log_do_checkpoint()
356 		if (__jbd2_journal_remove_checkpoint(jh))  in jbd2_log_do_checkpoint()
425 static int journal_clean_one_cp_list(struct journal_head *jh, bool destroy)  in journal_clean_one_cp_list()  argument
428 	struct journal_head *next_jh = jh;  in journal_clean_one_cp_list()
431 	if (!jh)  in journal_clean_one_cp_list()
434 	last_jh = jh->b_cpprev;  in journal_clean_one_cp_list()
436 		jh = next_jh;  in journal_clean_one_cp_list()
437 		next_jh = jh->b_cpnext;  in journal_clean_one_cp_list()
439 			ret = __try_to_free_cp_buf(jh);  in journal_clean_one_cp_list()
441 			ret = __jbd2_journal_remove_checkpoint(jh) + 1;  in journal_clean_one_cp_list()
454 	} while (jh != last_jh);  in journal_clean_one_cp_list()
551 int __jbd2_journal_remove_checkpoint(struct journal_head *jh)  in __jbd2_journal_remove_checkpoint()  argument
558 	JBUFFER_TRACE(jh, "entry");  in __jbd2_journal_remove_checkpoint()
560 	if ((transaction = jh->b_cp_transaction) == NULL) {  in __jbd2_journal_remove_checkpoint()
561 		JBUFFER_TRACE(jh, "not on transaction");  in __jbd2_journal_remove_checkpoint()
566 	JBUFFER_TRACE(jh, "removing from transaction");  in __jbd2_journal_remove_checkpoint()
567 	__buffer_unlink(jh);  in __jbd2_journal_remove_checkpoint()
568 	jh->b_cp_transaction = NULL;  in __jbd2_journal_remove_checkpoint()
569 	jbd2_journal_put_journal_head(jh);  in __jbd2_journal_remove_checkpoint()
611 void __jbd2_journal_insert_checkpoint(struct journal_head *jh,  in __jbd2_journal_insert_checkpoint()  argument
614 	JBUFFER_TRACE(jh, "entry");  in __jbd2_journal_insert_checkpoint()
615 	J_ASSERT_JH(jh, buffer_dirty(jh2bh(jh)) || buffer_jbddirty(jh2bh(jh)));  in __jbd2_journal_insert_checkpoint()
616 	J_ASSERT_JH(jh, jh->b_cp_transaction == NULL);  in __jbd2_journal_insert_checkpoint()
619 	jbd2_journal_grab_journal_head(jh2bh(jh));  in __jbd2_journal_insert_checkpoint()
620 	jh->b_cp_transaction = transaction;  in __jbd2_journal_insert_checkpoint()
623 		jh->b_cpnext = jh->b_cpprev = jh;  in __jbd2_journal_insert_checkpoint()
625 		jh->b_cpnext = transaction->t_checkpoint_list;  in __jbd2_journal_insert_checkpoint()
626 		jh->b_cpprev = transaction->t_checkpoint_list->b_cpprev;  in __jbd2_journal_insert_checkpoint()
627 		jh->b_cpprev->b_cpnext = jh;  in __jbd2_journal_insert_checkpoint()
628 		jh->b_cpnext->b_cpprev = jh;  in __jbd2_journal_insert_checkpoint()
630 	transaction->t_checkpoint_list = jh;  in __jbd2_journal_insert_checkpoint()